Aggregate cap on restricted payments.

No definition available.

Name:	svu_AggregateCapOnRestrictedPayments
Namespace Prefix:	svu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Annual Dividends Permitted

+ References

No definition available.

+ Details

Name:	svu_AnnualDividendsPermitted
Namespace Prefix:	svu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument Maturity Term

+ References

No definition available.

+ Details

Name:	svu_DebtInstrumentMaturityTerm
Namespace Prefix:	svu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Redemption Amount

+ References

No definition available.

+ Details

Name:	svu_DebtInstrumentRedemptionAmount
Namespace Prefix:	svu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Redemption Premium

+ References

No definition available.

+ Details

Name:	svu_DebtInstrumentRedemptionPremium
Namespace Prefix:	svu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of commitment fees charged for unused borrowing capacity under the long-term financing arrangement that is available to the entity.

+ References

No definition available.

+ Details

Name:	svu_DebtInstrumentUnusedBorrowingCapacityFeePeriodEnd
Namespace Prefix:	svu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

LIBOR floor rate.

+ References

No definition available.

+ Details

Name:	svu_LiborFloorRate
Namespace Prefix:	svu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Fee Percentage

+ References

No definition available.

+ Details

Name:	svu_LineofCreditFacilityFeePercentage
Namespace Prefix:	svu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Long Term Debt Aggregate Principal Amount

+ References

No definition available.

+ Details

Name:	svu_LongTermDebtAggregatePrincipalAmount
Namespace Prefix:	svu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum period for prepayment of loans outstanding.

+ References

No definition available.

+ Details

Name:	svu_MaximumPeriodForPrepaymentOfLoansOutstanding
Namespace Prefix:	svu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of aggregate principal amount to prepay outstanding loans.

+ References

No definition available.

+ Details

Name:	svu_PercentageOfAggregatePrincipalAmountToPrepayOutstandingLoans
Namespace Prefix:	svu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of net cash proceeds to prepay outstanding loans.

+ References

No definition available.

+ Details

Name:	svu_PercentageOfNetCashProceedsToPrepayOutstandingLoans
Namespace Prefix:	svu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	svu_ProformaDebtInstrumentLineItems
Namespace Prefix:	svu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Senior Notes Containing Operating Covenants Including Limitations on Transactions

+ References

No definition available.

+ Details

Name:	svu_SeniorNotesContainingOperatingCovenantsIncludingLimitationsOnTransactions
Namespace Prefix:	svu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Notice period the entity is required to deliver before it can redeem an investment calculated using net asset value per share, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, investments calculated by per unit, per membership interest, other equity or ownership interest and alternative investments.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 6A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=SL6742756-110258

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

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-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansReceivableBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Subparagraph (SX 210.5-02.22)

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for loan and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsOfFinancingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

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-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_SecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

+ Details

Name:	us-gaap_SecuredDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
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Period Type:

- Details

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Namespace Prefix:
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Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_InventoriesMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=svu_AssetBackedRevolvingCreditAmendedFacilityMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=svu_AssetBackedRevolvingCreditFacilityMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=svu_SecondABLAmendmentMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=svu_EightPercentSeniorNotesDueMayTwoThousandSixteenMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=svu_SeniorNotesDueTwoThousandAndSixteenMember
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Period Type:

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Namespace Prefix:
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Namespace Prefix:
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LONG-TERM DEBT - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
	Feb. 28, 2015	Feb. 22, 2014	Feb. 23, 2013	Apr. 17, 2014	Sep. 30, 2014	Nov. 14, 2014
Proforma Debt Instrument [Line Items]
Long-term debt	$ 2,480,000,000us-gaap_LongTermDebt	$ 2,486,000,000us-gaap_LongTermDebt
Payments of financing costs	42,000,000us-gaap_PaymentsOfFinancingCosts	151,000,000us-gaap_PaymentsOfFinancingCosts	66,000,000us-gaap_PaymentsOfFinancingCosts
Revolving ABL Credit Facility
Proforma Debt Instrument [Line Items]
Line of Credit Facility, Fee Percentage	1.625%	2.125%
Line of Credit Facility, Commitment Fee Amount	871,000,000
Long-term Line of Credit	0
Letters of Credit Outstanding, Amount	76,000,000	101,000,000
Remaining borrowing capacity		786,000,000
Unused borrowing capacity fee		0.375%
Proceeds from lines of credit	3,268,000,000	3,803,000,000
Repayments of Debt	3,268,000,000	4,010,000,000
Aggregate cap on restricted payments	299,000,000
Annual dividends permitted	50,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
Asset Backed Revolving Credit Amended Facility
Proforma Debt Instrument [Line Items]
Debt instrument maturity term				90 days
Aggregate principal amount				500,000,000
Long-term debt				250,000,000
Stated interest rate				8.00%
Second ABL Amendment
Proforma Debt Instrument [Line Items]
Debt instrument maturity term				30 days	90 days
Aggregate principal amount				250,000,000
2016 Senior Notes
Proforma Debt Instrument [Line Items]
Investment Redemption, notice period						30 days
6.75% Senior Notes due June 2021
Proforma Debt Instrument [Line Items]
Stated interest rate	6.75%	6.75%				6.75%
Senior Notes Containing Operating Covenants Including Limitations on Transactions						400,000,000
6.75% Senior Notes due June 2021 \| Senior Notes
Proforma Debt Instrument [Line Items]
Long-term debt	400,000,000	400,000,000
8.00% Senior Notes due May 2016
Proforma Debt Instrument [Line Items]
Long-term Line of Credit		0
Stated interest rate	8.00%	8.00%
Redemption amount						350,000,000
Redemption premium						35,000,000
Write off of deferred debt issuance cost						5,000,000
Senior Notes Containing Operating Covenants Including Limitations on Transactions						278,000,000
8.00% Senior Notes due May 2016 \| Senior Notes
Proforma Debt Instrument [Line Items]
Long-term debt	278,000,000	628,000,000
Senior Notes Due 2022
Proforma Debt Instrument [Line Items]
Senior Notes Containing Operating Covenants Including Limitations on Transactions						350,000,000
Senior Notes Due 2022 \| Senior Notes
Proforma Debt Instrument [Line Items]
Stated interest rate						7.75%
Long-term debt						350,000,000
Payments of financing costs						4,000,000
Term Loan Credit Facility \| Term Loan A
Proforma Debt Instrument [Line Items]
Secured debt	1,469,000,000	1,474,000,000
Debt instrument term	6 years
Debt Instrument, Face Amount	1,500,000,000
Secured debt, current	9,000,000	0
Percentage of net cash proceeds to prepay outstanding loans	100.00%
Maximum period for prepayment of loans outstanding	90 days
Term Loan Credit Facility \| Term Loan A \| Property, Plant and Equipment
Proforma Debt Instrument [Line Items]
Collateral amount	776,000,000	0
Term Loan Credit Facility \| Minimum \| Term Loan A
Proforma Debt Instrument [Line Items]
Percentage of aggregate principal amount to prepay outstanding loans	0.00%
Term Loan Credit Facility \| Maximum \| Term Loan A
Proforma Debt Instrument [Line Items]
Percentage of aggregate principal amount to prepay outstanding loans	50.00%
Term Loan Credit Facility \| Revolving ABL Credit Facility \| Term Loan A
Proforma Debt Instrument [Line Items]
Debt instrument term	5 years
Maximum borrowing capacity	0
London Interbank Offered Rate (LIBOR) \| Asset Backed Revolving Credit Amended Facility \| Minimum
Proforma Debt Instrument [Line Items]
LIBOR Plus interest rate				1.50%
London Interbank Offered Rate (LIBOR) \| Asset Backed Revolving Credit Amended Facility \| Maximum
Proforma Debt Instrument [Line Items]
LIBOR Plus interest rate				2.00%
London Interbank Offered Rate (LIBOR) \| Term Loan Credit Facility \| Term Loan A
Proforma Debt Instrument [Line Items]
Libor floor rate	100.00%
LIBOR Plus interest rate	350.00%
Prime Rate \| Asset Backed Revolving Credit Amended Facility \| Minimum
Proforma Debt Instrument [Line Items]
Interest rate at the rate of (Prime plus)				0.50%
Prime Rate \| Asset Backed Revolving Credit Amended Facility \| Maximum
Proforma Debt Instrument [Line Items]
Interest rate at the rate of (Prime plus)				1.00%
Inventories \| Revolving ABL Credit Facility
Proforma Debt Instrument [Line Items]
Collateral amount	1,188,000,000	1,066,000,000
Accounts Receivable \| Revolving ABL Credit Facility
Proforma Debt Instrument [Line Items]
Collateral amount	0	0
Cash and Cash Equivalents \| Revolving ABL Credit Facility
Proforma Debt Instrument [Line Items]
Collateral amount	$ 0	$ 0